- For some it is Memorial Day weekend.
- some it is when school gets out.
- for meteorological summer in Minnesota June 1st is the date normally used.
- For astronomical summer it goes by the day with the longest daylight
- in Northern Hemisphere is June 20 2017
- in Southern Hemisphere it is December 21 2017
- Have a Happy Summer
more about seasons: https://www.ncei.noaa.gov/news/meteorological-versus-astronomical-seasons